Home / 78,591.46-108,458.64-42,783.85

Finding the Fourth Proportional to 78,591.46, 108,458.64 and 42,783.85

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Solution

The fourth proportional to 78,591.46, 108,458.64 and 42,783.85 is: 59,043.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,591.46 : 108,458.64 = 42,783.85 : x
  2. Step 2: Convert to fraction form
    78,591.46/108,458.64 = 42,783.85/x
  3. Step 3: Cross multiply
    78,591.46x = 108,458.64 × 42,783.85
  4. Step 4: Simplify right side
    78,591.46x = 4,640,278,184.96
  5. Step 5: Solve for x
    x = 4,640,278,184.96/78,591.46
  6. Step 6: Final answer
    x = 59,043.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.